WKG Package
52-Lead QFN Multipad (7mm × 8mm)
(Reference LTC DWG # 05-08-1768 Rev B)
SEATING PLANE
A
7.00
BSC
0.00 – 0.05
2.625 REF
41
B
PAD 1
CORNER
3
2.90 REF
0.50 BSC
40
3.20 ±0.10
2.025
±0.10
2.925 ±0.10
3.90 ±0.10
bbb M C A B
8.00
BSC
1
3.40 REF
7
PIN 1 ID
52
3.40 REF
33
8
32
9
1.00 REF
10
NX b
aaa C 2x
4.275 ±0.10
27
0.580 ±0.10
TOP VIEW
0.90 ±0.10
6
2.025
±0.10
1.775
REF
0.25 ±0.05
WKG52 QFN REV B 1013
2.625 REF
NOTE:
1. DIMENSIONING AND TOLERANCING CONFORM TO ASME Y14.5M-1994
2. ALL DIMENSIONS ARE IN MILLIMETERS, ANGLES ARE IN DEGREES (°)
3.40 REF
2.925 ±0.10
3
THE LOCATION OF THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING
CONVENTION CONFORMS TO JEDEC PUBLICATION 95 SPP-002
4
DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS MEASURED
BETWEEN 0.20mm AND 0.30mm FROM THE TERMINAL TIP. IF THE TERMINAL
HAS THE OPTIONAL RADIUS ON THE OTHER END OF THE TERMINAL, THE
DIMENSION b SHOULD NOT BE MEASURED IN THAT RADIUS AREA.
5
COPLANARITY APPLIES TO THE TERMINALS AND ALL OTHER SURFACE
METALLIZATION
6
DRAWING SHOWN ARE FOR ILLUSTRATION ONLY
3.90 ±0.10
0.85 × 0.85
(6×)
0.8 × 0.8 (12×)
1.00 REF
8.50 ±0.05
4.275 ±0.10
2.25 ±0.10
15
BOTTOM VIEW
(BOTTOM METALLIZATION DETAILS)
5
PIN 1
3.20 ±0.10
0.40 ±0.10
19
1.35
±0.10
NX
0.08 C
// ccc C
7.50 ±0.05
2.90 REF
0.50 BSC
14
26
aaa C 2x
3.40 REF
2.25 ±0.10
PACKAGE
OUTLINE
0.40 ±0.10
0.9 × 0.9 (8×)
SYMBOL TOLERANCE
aaa
0.15
bbb
0.10
ccc
0.10
7. PAD LAYOUT AND SETNCIL LAYOUT AS GUIDE LINE ONLY. DRAWING NOT TO SCALE
0.25 ±0.05
1.775
REF
RECOMMENDED SOLDER PAD LAYOUT
TOP VIEW
1.35
±0.10
RECOMMENDED STENCIL DESIGN
(SAME DIMENSIONS AS PAD LAYOUT, NOTE 7)